<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .container{
            width:300px;
            height:200px;
            margin:200px auto;
        }
        .item{
            margin-bottom:20px;
        }
    </style>
</head>
<body>
<div.containter>
<form action="/stu/add" method="post">
    <div class="item">
        <label for="name">姓名</label>
        <input type="text" id="name" name="name"  placeholder="请输入姓名" required>
    </div>
    <div class="item">
        <label for="age">年龄</label>
        <input type="number" id="age" name="age" placeholder="请输入年龄" required>
    </div>
    <div class="item">
        <label for="gender">性别</label>
        <input type="text" id="gender" name="gender" placeholder="请输入性别" required>
    </div>
    <div class="item">
        <label for="address">住址</label>
        <input type="text" id="address" name="address" placeholder="请输入地址">
    </div>
    <div class="item">
        <button type="submit">添加</button>
    </div>

</form>
</body>
</html>